1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sladkih [1.3K]
3 years ago
15

Simplify y^-2/y^-7. Write your answer with a positive exponent only.

Mathematics
2 answers:
Vaselesa [24]3 years ago
6 0

Answer:

y^2

Step-by-step explanation:

One way of doing this problem is to multiply both numerator and denominator by y^7.  Doing this we get:

  y^(-2+7)

--------------- = y^2

 y^(-7+7)

attashe74 [19]3 years ago
4 0

Answer:

y^5

Step-by-step explanation:

y^-2/y^-7

When we divide exponents with the same base, we subtract the exponents

y^ ( -2 - -7)

y^ ( -2+7)

y^ 5

You might be interested in
Can someone help me please and thanks .
enyata [817]

Answer:

<em>$180.</em>

Step-by-step explanation:

First lets find the <em>interest rate.</em>

<em>6.1 ÷ 100 = 0.061</em>

<em>0.061 x $200 = 12.2</em>

based on the calculations, <em>12.2</em> is our interest rate <em>in a year</em>.  Now lets find the interest rate in <em>15 years</em>.

<em>12.2 x 15 = $183 </em>

So <em>$183</em> is our<em> precise</em> interest rate in <em>15 years</em>, but lets<em> round the interest rate to the nearest 10 dollars.</em>  Therefore, <em>$180 is our answer.</em>

6 0
2 years ago
a) Suppose that a large mixing tank initially holds 300 gallons of water in which 50 pounds ofsalt have been dissolved. Pure wat
Kay [80]

Answer:

x  =  50*e∧ -t/100

Step-by-step explanation:

We assume:

1.-That the volume of mixing is always constant 300 gallons

2.-The mixing is instantaneous

Δ(x)t   =  Amount in  - Amount out

Amount  =  rate * concentration*Δt

Amount in  =  3 gallons/ min * 0  =  0

Amount out  = 3 gallons/min *  x/ 300*Δt

Then

Δ(x)t/Δt  =  - 3*x/300    Δt⇒0   lim Δ(x)t/Δt  =  dx/dt

dx/dt  =  - x/100

dx/ x  =  - dt/100

A linear first degree differential equation

∫ dx/x   =  ∫ - dt/100

Ln x  =  - t/100  +  C

initial conditions to determine C

t= 0     x =  50 pounds

Ln (50) = 0/100 * C

C =  ln (50)

Then final solution is:

Ln x  =  - t/100  + Ln(50)   or

e∧ Lnx   =  e ∧ ( -t/100 + Ln(50))

x  =  e∧ ( -t/100) * e∧Ln(50)

x  = e∧ ( -t/100) * 50

x  =  50*e∧ -t/100

4 0
2 years ago
How do you reduce ln(3^-e e^3) to simplest form
leva [86]

The logarithm of a product is equal to the sum of logarithms:

\ln(3^{-e}e^3)=\ln3^{-e}+\ln e^3

Drop the exponents:

-e\ln3+3\ln e

The logarithm of a number is equal to 1 if the base of the logarithm is the same as the number itself:

-e\ln3+3

7 0
3 years ago
A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. The
tatyana61 [14]

Answer:a+b

Step-by-step explanation:

You can use the variables a and b to solve your equation if you need

6 0
3 years ago
the 8th grade is selling tickets to the 8th grade formal. the cost per ticket is $15. the decorations and food cost $600, and ea
ruslelena [56]
Answer: 40

I did the math already
3 0
2 years ago
Other questions:
  • What is TR to the nearest whole number?<br> TR/65 = tan(44)<br> TR = 65*tan(44)
    8·1 answer
  • The long-distance calls made by the employees of a company are normally distributed with a mean of 6.3 minutes and a standard de
    13·1 answer
  • Which is greater 36 yards 2feet or 114 feet 2 inches
    6·1 answer
  • Which of the following inequalities is correct?
    10·1 answer
  • If a auditorium has 850 seats tickets were sold for 816 of the seats of the seats for what percent of the seats were tickets sol
    11·1 answer
  • A Hudson Valley farmer has 26 employees. He pays each employee $410 per week. After paying his workers for one week, the farmer
    11·2 answers
  • The figure has an area of 193.5 cm2. Which equation can be used to find the value of n, in centimeters?
    15·1 answer
  • A store had 5 packs of paper for $7.80. How much would it cost if you were to buy 3 packs
    7·1 answer
  • A plane descends 1000 ft while flying<br> 2.7 mi. What is the angle of descent?
    6·1 answer
  • Find the hourly wage for a person with an income of $44762, who works 54
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!